2. G’s jokes are represented by 1 mole of a solid at temperatureT1 < 273K. They are so savage that when youput them in an ocean of mass M,
initially at temperature T2 > 273 K, 2 / 3 of thatocean freezes (and the jokes remain solid). You may assume bothcm of liquid ocean and
∆ Hm of melting ocean at Tmelt = 273 K areknown.
a) What is the molar specific heat of G’s jokes?
b) What is the change in the entropy of the universe as a resultof G’s jokes interacting with
the ocean?
c) Challenge mode (do this last). Is youranswer in b) consistent with the second law of
thermodynamics? Prove why or why not.
